------------[ cut here ]------------ WARNING: CPU: 1 PID: 4266 at include/linux/backing-dev.h:247 inode_to_wb include/linux/backing-dev.h:243 [inline] WARNING: CPU: 1 PID: 4266 at include/linux/backing-dev.h:247 folio_account_dirtied mm/page-writeback.c:2587 [inline] WARNING: CPU: 1 PID: 4266 at include/linux/backing-dev.h:247 __folio_mark_dirty+0x937/0x11c0 mm/page-writeback.c:2638 Modules linked in: CPU: 1 PID: 4266 Comm: syz-executor Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:inode_to_wb include/linux/backing-dev.h:243 [inline] RIP: 0010:folio_account_dirtied mm/page-writeback.c:2587 [inline] RIP: 0010:__folio_mark_dirty+0x937/0x11c0 mm/page-writeback.c:2638 Code: e9 90 f8 ff ff e8 79 7a d3 ff 0f 0b e9 e1 f8 ff ff e8 6d 7a d3 ff 48 89 df 48 8b 74 24 18 e8 40 38 2b 00 eb a6 e8 59 7a d3 ff <0f> 0b 43 80 3c 2c 00 0f 85 9c fb ff ff e9 9f fb ff ff 89 c2 80 e2 RSP: 0018:ffffc90004257a58 EFLAGS: 00010093 RAX: ffffffff81aef817 RBX: ffffea0001589e00 RCX: ffff88802e5d5940 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000001 R08: ffffea0001589e07 R09: 1ffffd40002b13c0 R10: dffffc0000000000 R11: fffff940002b13c1 R12: 1ffff11002f11bef R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88801788df78 FS: 0000555587848500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0deb21a000 CR3: 000000005c9f1000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __set_page_dirty include/linux/pagemap.h:1090 [inline] mark_buffer_dirty+0x33f/0x7a0 fs/buffer.c:1105 gfs2_unpin+0x125/0x9a0 fs/gfs2/lops.c:111 buf_lo_after_commit+0x15a/0x1a0 fs/gfs2/lops.c:747 lops_after_commit fs/gfs2/lops.h:49 [inline] gfs2_log_flush+0x1109/0x2530 fs/gfs2/log.c:1116 gfs2_kill_sb+0x50/0xd0 fs/gfs2/ops_fstype.c:1729 deactivate_locked_super+0x93/0xf0 fs/super.c:332 cleanup_mnt+0x42c/0x4b0 fs/namespace.c:1191 task_work_run+0x1d0/0x260 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0xe6/0x110 kernel/entry/common.c:177 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fb87a99c117 Code: a2 c7 05 7c 94 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffdaa1c88d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007fb87aa0471f RCX: 00007fb87a99c117 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffdaa1c8990 RBP: 00007ffdaa1c8990 R08: 00007ffdaa1c9990 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffdaa1c9a20 R13: 00007fb87aa0471f R14: 0000000000016e0f R15: 00007ffdaa1c9a60